Vulcanizing-mold



O. M. FREUD.

VULCANIZING MOLD.

APPLICATION FILED IJEc.28. 1920.

1.376,196. Patented-A1... 26, 1921.

fa-II- 5 W/Tll/ESSES /NVENTUH A TTRNEYS M. FREDD, 01E' HANCOCK, MICHIGAN.

meaivrzrnelmorn.

Lafraise.

Specllcaton of Letters Patent.

Patented Apr. 25, 1921.

Application filed December 25, 1920. Serial No. 433,641.41.

To all whom it may concern:

Be it known that I OsoAn M. Flinn, a citizen of the United tates, and a resident of Hancock, in the county of Houghton and State of Michigan, have invented new and improved Vulcanlzing-Molds, of which the following is a full, clear, and exact description.

The present invention relates to new and useful' improvements in repair devices for tires, and it pertains more particularly to the vulcanizing mold therefor.

1t is one of the primary objects of the present invention to provide a device of this character, which is capable of use with tires of diHerent dimensions.

1n the vulcanizing of tires asordinarily practised, the portion vulcanized is generall heated upon but one side or face thereo and it is a further ob'ect of the present invention to apply the eat to the portion to be vulcanized at opposite sidesthereof in order that the localization of the heat may be more eectively carried out.

A further object of the invention is to provide a device of this character in which the heating medium used is steam.

lt is a further object of the invention to s0 construct a device of this character that the water of condensation may be properly parried off from within the heating cham- With reference is had to the accompanying ings, in which-,-

Figure 1 is a sectional view showing the manner of use of the present device;

Fig. 2 is a sectional viewl taken on the line 2-2 of Fig. 1;

Fig. 3 is a modified form of the'invention.

Referring more particularly to the drawthe above and other objects in view,

drawin s, the reference character 5 designates an X or inary mold commonly employed in the practice of vulcanizingl tires, and said mold is provided with a curved face 6 adapted to receive the tire and a handle 7 by means of which the mold may be manipulated. r1`he mold is generally formed of a hollow structure and steam or other suitable medium is introduced thereto through the inlet opening 8. The reference character 9 designates a U-shaped clamp, and the foot 10 of said clamp is adapted to engage beneath the interior mold 5,v as more clearly shown in Figs. 1 and 2.

The reference character 15 designates an internal mold and said internal mold forms `the essence of the present invention. As

more clearly shown in F ig. 1, this internal mold is substantially rectangular in crosssectional form, and each of its side walls 16 is arranged at a different angle from the remainder of the side walls in order that the proper curvature may be obtained for tires of different dimensions. Leading into the end of the device at a point approximately central thereof, is a nipple 20, and inthe preferred form of the invention, a iiexible tube 21 is secured to the nipple 2Q, said tube 21 occupying a position internally of the member 15. Leading into the-mem er 15, near one of its side edges, is

a nipple 23, and said nipple 23 is adapted to communlcate with the interior of the member 15. Connected to the nipples 20 and 23, are 'Hexible pipes 24: and 25, respectively. The pipe 25 serves the means by which the heating medium is conveyed to the interior of the member 15, and the pipe 25 forms the means by which the water of condensation is withdrawn from the member 15. This end of the member 15 is provided with a suitable eye 26, which may be engaged by means of a hook to provide for roper manipulation of the member 15 within the tire.

1n the'form of the invention shown in Fig. 3, the drain pipe 21 instead of being formed of exible material is preferably rigid and is bent in order that it may engage the bottom wall, and said drain pipe 21 is swivelingly mounted in a stuffing` gland 30 in order that it may be moved to any of the side walls which may be positioned at the bottom as indicated bydotted lines in said figure. v

The device is used in the following manner:

When it is desired to carry out the vulcanizing operation, the mold 5 is placed exteriorly of the casing with the .member 5 thereof. The clamp is now positioned and its threaded member 4:0 is moved into engagement with the member 15 in order that the material operated upon may be securely clamped between the mold 5 and the member 15. The heating medium is now permitted to flow to the interior of the memto said heating element, and means for comber 15 and as'the mold heats u it will be pressing the tire operated upon between the seen that the heat thereof wil be transmold and the heating element. mitted to the material operated upon. l 3. n combination with a tire-vulcanizin 5 By this construction it will be seen that mold, a reversible heating element adapte the invention provides a means whereby the to be arran ed in opposition to the mold heat ap lied to the tire to be vulcanized is and interior y of the tire, means for conlocalized), and that the portion of the tire veyng steam to said heating element to heat treated may be heated through from opposite the same, and universally adjustable means 1o sides, thus insuring a suiiicient -amount of for withdrawing the Water of condensation heat being employed to properly carry out from the interior of said heating element. the vulcanizing operatic 4. A device of the character described I claim.- comprising a reversible hollow member of 1. In combination with a vulcanizing substantially rectangular form, the several 15 mold, a reversible heating element adapted side Walls of which are curved to different to be placed in opposition to the mold and angles to adapt the device for use with tires to clamp the material operated upon beof different dimensions, means for conveytween the heating element and the mold. ing steam to the interior of said membery to 2. In combination with a mold for vulheat the same and universally adjustable 20 canizin tires, a reversible heating element means mounts Within the member for conada te to be arranged in opposition to veying the Water of condensation therefrom. sai mold and positioned interiorly of the tire, means for supplying a heating medium OSCAR M. FREDD. 

